Software Engineering

12.1.3 
Establishing the software integration strategy
The initial level of structural components should be identified based on the need 
to combine common structural units into larger, more complex assemblages. The 
structural components at this initial level may be labeled as 
fundamental
 struc-
tural components due to their composition consisting of only structural units. Each 
fundamental structural component represents a task to assemble and integrate a 
set of structural units into a single executable file for integration-level testing. 
1 
See 
http://en.wikipedia.org/wiki/Bill_of_materials
. A bill of materials is a list of the raw materials, 
subassemblies, intermediate assemblies, subcomponents, components, parts, and the quantities of 
each needed to manufacture an end item. A BOM can define products as they are designed (engineer-
ing BOM), as they are built (manufacturing BOM), or as they are maintained (service BOM). The 
different types of BOMs depend on the business need and use for which they are intended. BOMs 
are hierarchical in nature with the top level representing the finished product. BOMs that describe the 
subassemblies are referred to as modular BOMs.

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